Opinion|Videos|September 12, 2024

JAK Inhibitor Selectivity and Dose-Related Toxicity

Panelists discuss how the varying selectivity of JAK inhibitors—such as tofacitinib's broad inhibition of JAK1/JAK2/JAK3, baricitinib's inhibition of JAK1/JAK2, and upadacitinib's focus on JAK1—affects dose-related toxicity and overall treatment safety.

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Mechanism of action also differs in the Janus kinase (JAK) inhibitor class. Tofacitinib inhibits JAK1/JAK2/JAK3, baricitinib inhibits JAK1/JAK2, and upadacitinib inhibits JAK1. Can you describe how more specific selectivity of JAK inhibition influences dose-related toxicity?

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